Linotype, (trademark), typesetting machine by which characters are cast in type metal as a complete line rather than as individual characters as on the Monotype typesetting machine. It was patented in the United States in 1884 by Ottmar Mergenthaler. Linotype, which has now largely been supplanted by photocomposition, was most often used when large amounts of straight text matter were to be set.

In the Linotype system, the operator selects a magazine containing brass matrices to mold an entire font of type of the size and face specified in the copy at hand. A keyboard is manipulated (or driven by paper or magnetic computer tape) to select the matrices needed to compose each line of text, including tapered spacebands, which automatically wedge the words apart to fill each line perfectly. Each matrix is transported to an assembling unit at the mold.

Lineup of matrices and justifying spacers (spacebands) and a cast line of type in a linecasting …

Courtesy of Harris-Intertype

The slugs produced by the machine are rectangular solids of type metal (an alloy of lead, antimony, and tin) as long as the line or column measure selected. Raised characters running along the top are a mirror image of the desired printed line. After hot-metal casting, a distributing mechanism returns each matrix to its place in the magazine. The slug of type, air-cooled briefly, is then placed in a “stick” for insertion in the proper position into the press form being assembled or made up.

Page from A Bakers’ Dozen of Emblems, with drawings and Electra, a linotype typeface, …

Courtesy of the Newberry Library, Chicago

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The main breakthrough, however, did not take place until the end of the century, with the introduction of automatic typesetting on Ottmar Mergenthaler’s Linotype machine. Until then, each line of words to be printed had to be lined up and justified (made to fill exactly the allotted space between margins) by hand. After printing, the letters were replaced in alphabetical order by hand for...

...engine helped to mechanize and thus to speed up the processes of papermaking and printing. In the latter case the acceleration was achieved by the introduction of the high-speed rotary press and the Linotype machine for casting type and setting it in justified lines (i.e., with even right-hand margins). Printing, indeed, had to undergo a technological revolution comparable to the 15th-century...